I think it's been since installing Yosemite, but my MBP is very slow to respond to simple menu commands, and Photoshop & other apps keep crashing... I tried using Onyx, and near the last line of the...

I'm trying to upgrade to Mavericks from 10.7.5 on my MBP… last night, in the App Store, I saw that the button said 'downloading,' but saw only a status bar in an icon in Applications that stayed at a...

ok thanks--so eSATA is better than FW800...in that case, I may not need to buy another drive--one of the 1TB G-Drives I have behind the TIme machine could work as a scratch disk, if it was set up as...